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Finding the Fourth Proportional to 201,239.40, 301,421.70 and 122,215.80

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Solution

The fourth proportional to 201,239.40, 301,421.70 and 122,215.80 is: 183,058.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,239.40 : 301,421.70 = 122,215.80 : x
  2. Step 2: Convert to fraction form
    201,239.40/301,421.70 = 122,215.80/x
  3. Step 3: Cross multiply
    201,239.40x = 301,421.70 × 122,215.80
  4. Step 4: Simplify right side
    201,239.40x = 36,838,494,202.86
  5. Step 5: Solve for x
    x = 36,838,494,202.86/201,239.40
  6. Step 6: Final answer
    x = 183,058.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.